Factory wholesale High Quality Carbide Button Drill Bit Rock drill 7 11 12 degree Taper drill bit
Spherical tapered button bit Features
Ball-tooth tapered button bit has the characteristics of long service life, accurate positioning, coarse cuttings, low dust, durability and no need for grinding, etc. Compared with the traditional flaky tapered button bit, the drilling speed is faster, and the ball-tooth bit is passivated. Long, its non-grinding life is about 5-6 times that of the tapered button bit of the same diameter blade head, which is conducive to saving auxiliary man-hours, reducing manual labor of workers and speeding up engineering. Therefore, tapered button bit with taper connection and threaded connection of different diameters is widely used in various hard and brittle rocks with drilling rigs.
The choice of mine tapered button bit
According to the nature of the rock, choose the appropriate tapered button bit for cemented carbide mines. Generally speaking, for rock with high hardness, tapered bit provided by alloy with relatively low hardness is selected, otherwise, tapered bit of alloy with relatively high hardness is selected. For extremely hard rock, if the power of the rock drill is high, the three-blade or cross tapered bit can be used. At this time, in order to facilitate unloading, the taper hole of the tapered button bit can be selected at 11° or 12°. For medium-hard rock with good integrity, in order to improve work efficiency and reduce costs, the tapered button bit can be selected.
Technical Parameters | ||||||
DIAMETER | BUTTONS | FLUSHING | CARBIDE | FACE | ||
MM | IN | GAUGE NO/ SIZE | FRONT NO/ SIZE | HOLE | PROFILE | PROFILE |
32 | 1 1/4″ | 5×7 | 2×7 | IF1G | Parabolic | Flat |
36 | 1 13/32″ | 5×8 | 2×7 | 2F1G | Conical | Flat |
38 | 1 1/2″ | 5×9 | 2×7 | 1F2G | Conical | Flat |
38 | 1 1/2″ | 5×9 | 2×7 | 2F 1G | Conical | Flat |
38 | 1 1/2″ | 5×9 | 2×7 | 2F1G | Conical | Flat |
40 | 1 9/16″ | 5×9 | 2×8 | 2F 1G | Conical | Flat |
41 | 1 5/8″ | 5×9 | 2×8 | 2F1G | Conical | Flat |
41 | 1 5/8″ | 5×9 | 2×8 | 2F 1G | Parabolic | Flat |